STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.8 1.7 ***** 10.5 15.2 21.1 27.3 24.6 20.4 16.6 5.7 -1.3 ***** MINIMUN AIR TEMPERATURE (C) -4.2 -4.0 ***** 5.6 9.3 11.5 17.7 15.8 10.6 8.0 0.7 -5.6 ***** DAYS WITH MINIMUM TEMP. >=21 0 0 **** 0 0 0 1 0 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 14 14 **** 0 0 0 0 0 0 0 1 21 **** DAYS WITH FREEZING MIN.<= 0 29 26 **** 0 0 0 0 0 0 0 12 30 **** TEMPERATURE RECORDS LOWEST(C) -11.5 -10.2 ***** 3.0 3.0 7.5 13.0 10.0 7.5 3.0 -4.0 -10.0 ***** DAY 24 3 ** 6 6 14 28 31 30 25 15 5 MAXIMUM AIR TEMPERATURE (C) 6.6 6.1 ***** 16.2 20.9 28.9 33.0 31.5 27.9 22.0 10.6 4.2 ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 **** 0 0 8 30 27 0 0 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 3 1 **** 0 0 0 0 0 0 0 0 1 **** TEMPERATURE RECORDS HIGHEST(C) 13.0 14.0 ***** 22.0 27.0 36.5 36.0 34.2 29.6 27.0 19.0 8.4 ***** DAY 3 28 ** 21 30 29 1 17 6 4 2 8 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 10.1 ***** 10.6 11.6 17.4 15.3 15.7 17.3 14.0 9.9 9.8 ***** MEAN DAILY TEMP. (MDT) (C) 1.2 1.0 ***** 10.9 15.1 20.2 25.3 23.6 19.3 15.0 5.7 -0.7 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 ****** 0.0 0.0 25.4 130.3 81.8 0.0 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 520.8 474.8 ****** 211.9 101.0 4.6 0.0 0.0 1.3 95.6 370.3 578.7 ****** DEWPOINT (MEAN C) -7.5 -6.0 ***** 2.0 -0.2 -0.4 5.6 6.8 -4.0 -1.0 -2.7 -7.1 ***** MIXING RATIO (G/KG) 2.84 3.18 ****** 5.73 5.02 4.91 7.40 8.12 3.71 4.63 4.09 2.95 ****** VAPOUR PRESSURE (HPA) 3.63 4.04 ****** 7.28 6.39 6.21 9.37 10.28 4.76 5.93 5.21 3.77 ****** SATURATION DEF. (HPA) 3.60 3.15 ****** 5.72 11.52 20.29 28.00 21.87 20.39 13.66 4.33 1.97 ****** RELATIVE HUMIDITY (MEAN %) 53 61 *** 60 40 26 26 35 22 33 59 66 *** RELATIVE HUMIDITY (MAX. %) 73 78 *** 81 58 45 37 48 37 52 78 79 *** RELATIVE HUMIDITY (MIN. %) 36 44 *** 38 24 14 20 23 11 22 40 52 *** RELATIVE HUMIDITY (MEAN% 03UTC) 66 72 *** 72 49 41 36 48 32 46 72 69 *** RELATIVE HUMIDITY (MEAN% 09UTC) 43 54 *** 47 34 17 23 28 14 26 50 62 *** RELATIVE HUMIDITY (MEAN% 15UTC) 56 59 *** 55 37 17 22 28 14 33 56 64 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.0 23.8 ****** 91.2 49.6 0.0 0.0 0.0 0.1 23.0 84.5 65.7 ****** DAYS WITH PRECIPITATION >=10 1 0 **** 3 2 0 0 0 0 2 3 1 **** DAYS WITH PRECIPITATION >= 5 2 2 **** 7 3 0 0 0 0 2 5 2 **** DAYS WITH PRECIPITATION >= 1 3 6 **** 13 4 0 0 0 0 2 8 8 **** DAYS WITH PRECIPITATION 5 9 **** 14 6 0 0 0 1 3 9 8 **** GREATEST DAILY PRECIPITATION 13.0 7.0 ****** 20.0 20.0 0.0 0.0 0.0 0.1 12.0 30.0 43.0 ****** DAY 31 1 ** 23 4 ** ** ** 18 23 30 20 DAY WITH THUNDER STORM 0 0 **** 3 4 0 0 0 0 1 1 0 **** DAYS WITH SNOW OR SLEET 6 7 **** 0 0 0 0 0 0 0 2 6 **** DAYS WITH DUST 0 1 **** 1 3 2 0 2 2 5 0 0 **** WIND DIRECTION (PREVAILING) 90 180 *** 180 180 180 180 180 180 180 180 180 *** PREVAILING WIND SPEED(KNOTS) 12.1 8.4 **** 9.7 11.7 8.9 11.7 8.6 7.4 7.4 11.0 8.3 **** PREVAILING WIND PERCENT 11.5 19.9 ***** 19.6 17.3 13.8 40.2 27.6 18.1 16.6 28.7 21.0 ***** CALMS PERCENT OF WIND 59.9 58.2 ***** 54.2 45.6 52.9 33.9 37.2 37.9 31.1 49.2 50.4 ***** NO. OF WIND OBSERVATION 157 141 **** 240 248 240 174 199 182 193 181 248 2203 VECTOR WIND DIRECTION (MEAN) 131 135 *** 165 183 163 176 191 153 115 167 136 *** VECTOR WIND MAGNITUDE(KNOTS) 2.7 2.1 **** 2.2 2.8 1.4 4.8 2.8 1.7 1.4 3.8 2.7 **** WIND STEADINESES (MEAN %) 60.0 53.8 ***** 48.9 45.2 31.8 63.2 51.9 35.4 25.5 73.1 61.4 ***** WIND SPEED (MEAN KNOTS) 4.5 3.9 **** 4.5 6.2 4.4 7.6 5.4 4.8 5.5 5.2 4.4 **** FASTEST WIND DIRECTION 90 120 *** 80 190 110 190 240 220 50 180 90 *** FASTEST WIND SPEED (KNOTS) 27 14 *** 29 35 25 23 29 23 17 31 25 *** DAY 12 5 ** 26 25 26 2 24 1 2 30 27 DAYS WITH SKY CLEAR (0-2)/8 18 11 **** 4 9 27 23 19 24 18 11 16 **** DAYS WITH P.CLOUDY (3-6)/8 9 8 **** 12 16 3 6 11 1 11 8 9 **** DAYS WITH CLOUDY (7-8)/8 4 9 **** 14 6 0 1 0 0 2 11 6 **** DAYS WITH VISIBILITY =< 2 KM 0 6 **** 6 3 0 0 0 0 0 1 2 **** DURATION OF SUNSHINE HOURS 213.1 181.2 ****** 193.2 246.2 345.9 314.9 310.6 323.7 260.0 181.0 207.4 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 799.5 795.9 ****** 797.8 798.8 794.9 797.4 798.3 802.2 802.9 798.6 798.4 ****** MAX. QFE PRESSURE IN HPA 806.9 803.5 ****** 803.3 804.4 802.3 801.7 802.0 807.0 808.0 804.3 806.1 ****** DAY-HOUR 10- 6 22- 6 **-** 15- 6 20-21 2- 6 31- 9 23-18 23- 6 15- 6 15- 6 7- 0 MIN. QFE PRESSURE IN HPA 785.8 790.5 ****** 792.7 790.2 788.8 792.4 792.4 797.4 798.6 790.0 789.4 ****** DAY-HOUR 20- 3 10- 3 **-** 10-15 4- 3 19- 3 20-12 5-12 5-15 1- 0 30- 0 20- 9 MEAN QNH PRESSURE IN HPA 1021.2 1016.8 ****** 1019.1 1020.3 1015.6 1018.6 1019.7 1024.4 1025.3 1020.0 1019.8 ****** MAX. QNH PRESSURE IN HPA 1030.2 1026.0 ****** 1025.8 1027.2 1024.6 1023.9 1024.2 1030.3 1031.5 1027.0 1029.2 ****** DAY-HOUR 10- 6 22- 6 **-** 15- 6 20-21 2- 6 31- 9 23-18 23- 6 15- 6 15- 6 7- 0 MIN. QNH PRESSURE IN HPA 1004.5 1010.2 ****** 1012.9 1009.8 1008.1 1012.5 1012.5 1018.6 1020.1 1009.6 1008.9 ****** DAY-HOUR 20- 3 10- 3 **-** 10-15 4- 3 19- 3 20-12 5-12 5-15 1- 0 30- 0 20- 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.1 1008.7 999.3 ****** 1001.4 1009.6 1014.1 ****** 1022.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.9 1018.7 1011.2 ****** 1010.3 1015.7 1020.3 ****** 1034.8 ****** DAY-HOUR **-** **-** **-** 5-21 18-15 2- 3 **-** 31- 3 23- 3 21-15 **-** 23-18 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.9 1000.8 990.2 ****** 993.9 1002.7 1005.4 ****** 1006.9 ****** DAY-HOUR **-** **-** **-** 10-12 31- 0 25-18 **-** 5-15 5-18 1- 3 **-** 1- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 797.4 798.2 794.9 ****** 798.7 802.9 ****** ****** 798.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 802.5 803.6 800.8 ****** 801.2 806.0 ****** ****** 806.1 ****** DAY ** ** ** 15 20 2 ** 25 23 ** ** 7 MIN. QFE PRESSURE IN HPA ****** ****** ****** 794.0 790.8 790.6 ****** 796.1 799.6 ****** ****** 791.3 ****** DAY ** ** ** 10 4 17 ** 15 30 ** ** 1 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1018.6 1019.6 1015.6 ****** 1020.2 1025.3 ****** ****** 1019.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1024.8 1026.2 1022.8 ****** 1023.2 1029.1 ****** ****** 1029.2 ****** DAY ** ** ** 15 20 2 ** 25 23 ** ** 7 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1014.5 1010.6 1010.3 ****** 1017.0 1021.3 ****** ****** 1011.2 ****** DAY ** ** ** 10 4 17 ** 15 30 ** ** 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.3 1007.9 999.3 ****** 1001.3 1010.3 ****** ****** 1021.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.1 1014.3 1008.9 ****** 1008.8 1013.1 ****** ****** 1032.8 ****** DAY ** ** ** 6 19 2 ** 31 22 ** ** 24 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1006.5 1000.8 992.4 ****** 997.7 1006.6 ****** ****** 1006.9 ****** DAY ** ** ** 25 31 27 ** 15 4 ** ** 1 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 799.9 796.2 ****** 797.7 798.7 795.3 797.7 799.0 802.6 803.2 798.9 798.4 ****** MAX. QFE PRESSURE IN HPA 806.0 802.7 ****** 802.8 803.2 801.4 801.5 801.4 806.5 807.1 803.5 805.5 ****** DAY 10 22 ** 15 20 2 15 25 23 15 16 7 MIN. QFE PRESSURE IN HPA 785.8 790.5 ****** 794.4 790.2 788.8 793.8 795.1 799.4 798.7 791.0 791.0 ****** DAY 20 10 ** 9 4 19 20 5 5 1 30 20 MEAN QNH PRESSURE IN HPA 1021.6 1017.1 ****** 1019.0 1020.2 1016.1 1019.0 1020.5 1024.9 1025.6 1020.4 1019.8 ****** MAX. QNH PRESSURE IN HPA 1029.1 1025.1 ****** 1025.2 1025.7 1023.5 1023.6 1023.5 1029.7 1030.4 1026.0 1028.5 ****** DAY 10 22 ** 15 20 2 15 25 23 15 16 7 MIN. QNH PRESSURE IN HPA 1004.5 1010.2 ****** 1015.0 1009.8 1008.1 1014.2 1015.8 1021.1 1020.2 1010.8 1010.8 ****** DAY 20 10 ** 9 4 19 20 5 5 1 30 20 MEAN QFF PRESSURE IN HPA 1023.3 1018.7 ****** 1011.8 1009.4 1000.9 999.5 1002.6 1011.2 1015.4 1018.0 1023.3 ****** MAX. QFF PRESSURE IN HPA 1033.2 1026.9 ****** 1018.9 1018.5 1011.2 1005.8 1010.3 1015.7 1019.7 1026.9 1034.5 ****** DAY 24 20 ** 6 19 2 15 31 23 21 15 24 MIN. QFF PRESSURE IN HPA 1006.0 1009.0 ****** 1007.2 1002.9 992.7 993.8 995.2 1007.1 1005.4 1008.3 1008.9 ****** DAY 20 10 ** 25 4 19 20 5 6 1 30 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 800.6 796.6 ****** 798.3 799.5 795.6 798.2 799.1 803.3 803.8 799.6 799.1 ****** MAX. QFE PRESSURE IN HPA 806.9 803.5 ****** 803.3 804.0 802.3 801.5 801.5 807.0 808.0 804.3 806.0 ****** DAY 10 22 ** 15 20 2 31 1 23 15 15 7 MIN. QFE PRESSURE IN HPA 786.7 792.1 ****** 794.5 791.0 792.1 794.4 794.1 800.0 799.4 793.3 791.0 ****** DAY 20 15 ** 9 4 27 20 5 5 1 30 20 MEAN QNH PRESSURE IN HPA 1022.5 1017.7 ****** 1019.7 1021.1 1016.4 1019.6 1020.7 1025.8 1026.4 1021.3 1020.6 ****** MAX. QNH PRESSURE IN HPA 1030.2 1026.0 ****** 1025.8 1026.7 1024.6 1023.6 1023.6 1030.3 1031.5 1027.0 1029.1 ****** DAY 10 22 ** 15 20 2 31 1 23 15 15 7 MIN. QNH PRESSURE IN HPA 1005.6 1012.1 ****** 1015.1 1010.8 1012.1 1015.0 1014.6 1021.8 1021.1 1013.6 1010.8 ****** DAY 20 15 ** 9 4 27 20 5 5 1 30 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1012.1 1009.5 999.9 ****** 1002.2 1010.1 1014.6 1015.9 1023.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.7 1015.5 1010.9 ****** 1008.9 1014.4 1019.3 1024.1 1034.5 ****** DAY ** ** ** 6 7 2 ** 31 28 26 28 23 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1007.0 1003.9 991.8 ****** 998.0 1005.6 1006.8 1008.7 1009.6 ****** DAY ** ** ** 19 4 29 ** 15 5 1 8 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 799.5 796.0 ****** 798.1 799.1 795.0 797.6 798.2 802.5 803.0 798.7 798.4 ****** MAX. QFE PRESSURE IN HPA 806.7 802.2 ****** 802.3 804.0 801.8 801.7 801.3 806.0 807.1 804.0 804.6 ****** DAY 2 22 ** 15 21 2 31 24 23 15 15 7 MIN. QFE PRESSURE IN HPA 786.1 791.0 ****** 794.6 790.8 791.5 793.6 792.9 799.1 799.9 792.9 789.4 ****** DAY 20 15 ** 10 4 27 20 5 5 1 30 20 MEAN QNH PRESSURE IN HPA 1021.2 1016.9 ****** 1019.4 1020.6 1015.7 1018.9 1019.6 1024.8 1025.4 1020.1 1019.8 ****** MAX. QNH PRESSURE IN HPA 1030.0 1024.5 ****** 1024.6 1026.7 1024.0 1023.9 1023.4 1029.1 1030.4 1026.7 1027.4 ****** DAY 2 22 ** 15 21 2 31 24 23 15 15 7 MIN. QNH PRESSURE IN HPA 1004.8 1010.8 ****** 1015.2 1010.6 1011.4 1014.0 1013.1 1020.7 1021.7 1013.1 1008.9 ****** DAY 20 15 ** 10 4 27 20 5 5 1 30 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.2 1008.9 998.8 ****** 1000.9 1009.4 ****** ****** 1021.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.5 1016.0 1010.3 ****** 1007.3 1012.6 ****** ****** 1031.9 ****** DAY ** ** ** 5 21 2 ** 31 28 ** ** 23 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1007.0 1002.6 990.5 ****** 997.4 1005.6 ****** ****** 1007.9 ****** DAY ** ** ** 25 3 28 ** 15 4 ** ** 20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 799.0 795.3 ****** 797.2 798.6 794.2 796.7 797.4 801.1 801.9 797.9 797.8 ****** MAX. QFE PRESSURE IN HPA 806.5 801.1 ****** 801.5 803.5 800.7 800.4 801.0 804.3 805.8 803.6 803.8 ****** DAY 2 22 ** 15 21 2 31 1 22 14 15 23 MIN. QFE PRESSURE IN HPA 786.1 791.0 ****** 793.0 790.4 790.7 792.4 792.4 797.6 799.1 792.9 790.0 ****** DAY 20 15 ** 10 4 21 20 5 5 24 30 20 MEAN QNH PRESSURE IN HPA 1020.5 1016.0 ****** 1018.3 1020.0 1014.7 1017.7 1018.6 1023.1 1024.1 1019.2 1019.1 ****** MAX. QNH PRESSURE IN HPA 1029.7 1023.1 ****** 1023.6 1026.0 1022.6 1022.3 1023.0 1027.0 1028.9 1026.2 1026.4 ****** DAY 2 22 ** 15 21 2 31 1 22 14 15 23 MIN. QNH PRESSURE IN HPA 1004.8 1010.8 ****** 1013.2 1010.1 1010.4 1012.5 1012.5 1018.9 1020.7 1013.1 1009.6 ****** DAY 20 15 ** 10 4 21 20 5 5 24 30 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.0 1008.1 998.3 ****** 1000.2 1008.7 ****** ****** 1021.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1017.5 1014.0 1009.0 ****** 1007.0 1011.8 ****** ****** 1031.7 ****** DAY ** ** ** 5 21 2 ** 30 22 ** ** 23 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.9 1001.8 990.6 ****** 995.8 1004.3 ****** ****** 1009.1 ****** DAY ** ** ** 10 3 26 ** 15 4 ** ** 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 799.3 795.8 ****** 797.5 798.6 794.1 796.5 797.2 801.0 802.6 798.5 798.5 ****** MAX. QFE PRESSURE IN HPA 805.0 800.9 ****** 801.2 802.8 800.9 799.6 801.5 804.7 806.8 803.7 804.2 ****** DAY 1 22 ** 14 18 2 30 24 22 15 15 23 MIN. QFE PRESSURE IN HPA 788.0 791.2 ****** 792.7 791.8 790.9 792.7 792.7 797.4 799.6 792.9 791.4 ****** DAY 20 15 ** 10 4 27 19 5 5 24 30 30 MEAN QNH PRESSURE IN HPA 1020.9 1016.7 ****** 1018.7 1020.1 1014.6 1017.5 1018.4 1023.0 1024.9 1019.9 1019.9 ****** MAX. QNH PRESSURE IN HPA 1027.9 1022.9 ****** 1023.2 1025.2 1022.9 1021.3 1023.6 1027.5 1030.1 1026.3 1026.9 ****** DAY 1 22 ** 14 18 2 30 24 22 15 15 23 MIN. QNH PRESSURE IN HPA 1007.1 1011.1 ****** 1012.9 1011.8 1010.7 1012.9 1012.9 1018.6 1021.3 1013.1 1011.3 ****** DAY 20 15 ** 10 4 27 19 5 5 24 30 30 MEAN QFF PRESSURE IN HPA 1022.7 1018.1 ****** 1011.4 1009.1 999.2 997.8 1000.6 1009.2 1014.7 1017.6 1023.5 ****** MAX. QFF PRESSURE IN HPA 1033.8 1024.3 ****** 1018.2 1018.7 1009.1 1002.6 1007.7 1013.2 1020.3 1026.8 1034.6 ****** DAY 24 3 ** 5 18 1 15 30 23 21 15 23 MIN. QFF PRESSURE IN HPA 1009.1 1009.7 ****** 1006.8 1004.1 991.0 992.1 993.9 1004.5 1008.1 1009.3 1010.4 ****** DAY 19 6 ** 10 13 26 20 5 5 1 30 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 798.2 799.2 795.0 ****** 798.9 802.0 803.4 798.0 798.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 802.8 804.0 802.0 ****** 802.0 805.6 807.3 802.0 804.6 ****** DAY ** ** ** 14 19 2 ** 23 22 15 28 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** 793.7 791.5 791.8 ****** 796.1 797.8 800.1 792.6 792.2 ****** DAY ** ** ** 10 3 16 ** 14 5 1 29 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1019.6 1020.8 1015.7 ****** 1020.5 1024.2 1025.9 1019.4 1020.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1025.2 1026.7 1024.2 ****** 1024.2 1028.6 1030.7 1024.2 1027.4 ****** DAY ** ** ** 14 19 2 ** 23 22 15 28 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1014.1 1011.4 1011.8 ****** 1017.0 1019.1 1021.9 1012.8 1012.3 ****** DAY ** ** ** 10 3 16 ** 14 5 1 29 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.8 1009.0 999.0 ****** 1001.6 1008.5 1014.1 1014.9 1023.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.3 1015.0 1010.7 ****** 1007.6 1012.5 1018.8 1022.2 1034.8 ****** DAY ** ** ** 5 18 2 ** 31 23 21 28 23 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1007.7 1003.5 990.2 ****** 997.4 1002.7 1007.2 1008.9 1011.0 ****** DAY ** ** ** 17 30 25 ** 14 5 1 7 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 797.9 798.7 795.2 ****** 799.1 802.7 ****** ****** 798.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 802.8 804.4 801.4 ****** 801.8 806.0 ****** ****** 804.6 ****** DAY ** ** ** 14 20 2 ** 23 22 ** ** 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** 794.1 792.0 792.0 ****** 796.4 799.6 ****** ****** 793.0 ****** DAY ** ** ** 10 3 20 ** 14 30 ** ** 27 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1019.3 1020.1 1015.9 ****** 1020.6 1025.0 ****** ****** 1019.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1025.2 1027.2 1023.5 ****** 1024.0 1029.1 ****** ****** 1027.4 ****** DAY ** ** ** 14 20 2 ** 23 22 ** ** 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1014.6 1012.0 1012.0 ****** 1017.4 1021.3 ****** ****** 1013.2 ****** DAY ** ** ** 10 3 20 ** 14 30 ** ** 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.8 1008.3 998.8 ****** 1001.3 1009.2 ****** ****** 1021.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.9 1014.4 1009.3 ****** 1006.6 1012.3 ****** ****** 1032.5 ****** DAY ** ** ** 5 6 2 ** 31 22 ** ** 23 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1007.0 1002.5 992.2 ****** 997.7 1005.9 ****** ****** 1011.4 ****** DAY ** ** ** 25 30 30 ** 14 3 ** ** 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.9 4.7 3.9 10.9 17.5 22.2 23.8 23.8 20.3 11.8 9.4 3.8 12.7 MINIMUN AIR TEMPERATURE (C) -4.5 -1.7 -0.4 4.0 10.2 12.1 14.6 14.7 11.2 5.8 2.1 -1.7 5.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 17 8 7 1 0 0 0 0 0 0 1 10 44 DAYS WITH FREEZING MIN.<= 0 25 18 15 8 0 0 0 0 0 0 8 22 96 TEMPERATURE RECORDS LOWEST(C) -10.4 -8.0 -6.0 -4.0 6.4 10.0 11.0 9.0 7.0 1.0 -5.0 -8.0 -10.4 DAY 9 12 21 6 6 1 10 30 30 28 30 31 MAXIMUM AIR TEMPERATURE (C) 8.0 10.4 8.8 17.6 24.6 30.7 31.9 31.9 28.4 17.3 14.8 8.5 19.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 22 23 25 10 0 0 0 80 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 15.0 17.0 14.6 25.0 27.4 33.0 35.6 34.4 33.0 27.0 18.0 15.0 35.6 DAY 31 2 24 30 14 29 24 20 8 2 5 12 DIF. BETWEEN (MAX.-MIN.) (C) 12.5 12.1 9.2 13.6 14.4 18.6 17.3 17.2 17.2 11.5 12.7 10.2 13.9 MEAN DAILY TEMP. (MDT) (C) 1.8 4.3 4.2 10.8 17.4 21.4 23.2 23.3 19.8 11.6 8.4 3.4 12.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 23.0 74.3 77.0 13.1 0.0 0.0 0.0 187.5 HEATING DEG. DAYS(BASE 18 0C) 502.4 382.7 427.9 203.7 29.4 0.0 0.0 0.0 5.1 198.2 286.8 452.8 2489.2 DEWPOINT (MEAN C) -7.3 -3.7 -3.6 -1.2 3.0 -2.2 0.9 1.4 1.8 1.6 -2.5 -5.4 -1.4 MIXING RATIO (G/KG) 2.86 3.76 3.88 4.57 6.04 4.16 5.60 5.59 5.64 5.62 4.12 3.43 4.60 VAPOUR PRESSURE (HPA) 3.66 4.79 4.91 5.82 7.69 5.30 7.10 7.10 7.18 7.16 5.28 4.38 5.86 SATURATION DEF. (HPA) 3.21 4.17 3.43 8.09 13.10 22.98 24.17 23.78 18.02 7.29 7.10 3.97 11.61 RELATIVE HUMIDITY (MEAN %) 57 59 63 47 41 21 27 25 31 56 47 55 44 RELATIVE HUMIDITY (MAX. %) 71 78 84 67 61 35 40 38 44 75 68 71 61 RELATIVE HUMIDITY (MIN. %) 39 39 40 27 25 12 16 15 20 40 30 40 29 RELATIVE HUMIDITY (MEAN% 03UTC) 63 71 76 61 57 32 37 36 42 67 64 63 56 RELATIVE HUMIDITY (MEAN% 09UTC) 48 52 54 32 29 13 18 17 22 44 40 54 35 RELATIVE HUMIDITY (MEAN% 15UTC) 54 54 55 39 32 15 22 20 24 58 43 55 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 15.0 53.4 123.2 24.8 13.8 0.0 35.0 0.8 0.3 96.8 16.0 68.5 447.6 DAYS WITH PRECIPITATION >=10 0 1 2 1 0 0 2 0 0 4 0 2 12 DAYS WITH PRECIPITATION >= 5 1 2 8 2 1 0 3 0 0 7 1 4 29 DAYS WITH PRECIPITATION >= 1 4 10 13 4 4 0 4 0 0 9 3 9 60 DAYS WITH PRECIPITATION 5 11 15 6 4 0 4 1 1 10 3 11 71 GREATEST DAILY PRECIPITATION 9.0 24.0 43.0 12.8 6.8 0.0 16.0 0.8 0.3 29.0 9.0 18.0 43.0 DAY 6 27 3 19 5 ** 27 9 28 23 3 23 DAY WITH THUNDER STORM 0 0 0 0 3 1 2 1 0 3 0 1 11 DAYS WITH SNOW OR SLEET 3 4 5 2 0 0 0 0 0 0 0 5 19 DAYS WITH DUST 0 2 0 1 0 0 0 0 0 1 0 0 4 WIND DIRECTION (PREVAILING) 180 180 180 180 135 135 135 45 225 180 135 135 180 PREVAILING WIND SPEED(KNOTS) 13.0 12.3 10.8 11.2 8.0 9.2 12.0 14.0 8.3 15.8 8.6 7.4 12.1 PREVAILING WIND PERCENT 43.5 34.2 31.0 25.8 11.3 25.0 33.1 7.3 9.2 15.7 10.3 20.6 16.0 CALMS PERCENT OF WIND 48.5 46.6 51.2 45.9 56.5 50.0 39.5 57.7 56.3 46.8 70.5 37.4 50.5 NO. OF WIND OBSERVATION 237 161 248 233 248 240 248 248 240 235 156 155 2649 VECTOR WIND DIRECTION (MEAN) 184 178 175 192 229 137 126 98 167 198 104 158 168 VECTOR WIND MAGNITUDE(KNOTS) 6.0 4.4 3.3 3.9 0.9 2.0 4.2 0.7 1.2 2.8 1.4 3.5 2.5 WIND STEADINESES (MEAN %) 93.8 69.8 62.3 69.6 24.3 43.5 59.2 14.3 27.3 40.6 48.3 68.6 47.2 WIND SPEED (MEAN KNOTS) 6.4 6.3 5.3 5.6 3.7 4.6 7.1 4.9 4.4 6.9 2.9 5.1 5.3 FASTEST WIND DIRECTION 210 190 190 190 340 200 150 90 90 260 270 170 190 FASTEST WIND SPEED (KNOTS) 27 23 19 35 29 23 29 25 19 29 19 19 35 DAY 10 4 1 18 5 12 27 21 3 12 7 19 DAYS WITH SKY CLEAR (0-2)/8 21 12 8 12 11 26 25 19 28 12 20 14 208 DAYS WITH P.CLOUDY (3-6)/8 6 12 12 13 14 4 4 12 2 9 8 11 107 DAYS WITH CLOUDY (7-8)/8 4 4 11 5 6 0 2 0 0 10 2 6 50 DAYS WITH VISIBILITY =< 2 KM 0 0 1 1 0 0 0 0 0 1 0 3 6 DURATION OF SUNSHINE HOURS 240.3 191.3 179.1 254.8 263.7 336.3 327.3 308.3 310.5 194.0 223.7 191.4 3020.7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 800.3 798.2 794.0 798.9 800.2 798.0 797.1 797.2 799.8 801.6 802.0 799.7 798.9 MAX. QFE PRESSURE IN HPA 807.6 806.7 799.6 804.2 804.6 802.9 801.3 802.8 806.0 806.2 808.0 808.1 808.1 DAY-HOUR 17- 6 1- 6 24- 6 22- 6 4-18 28- 6 29-21 8- 6 26- 6 16- 6 30- 6 1- 6 MIN. QFE PRESSURE IN HPA 790.2 790.8 785.2 789.4 795.8 792.5 792.3 793.0 796.2 796.4 795.0 790.7 785.2 DAY-HOUR 6-12 10-12 13-21 4-12 22-12 12-15 3-12 24-15 1-12 4-12 7-15 24- 3 MEAN QNH PRESSURE IN HPA 1022.2 1019.6 1014.5 1020.5 1022.0 1019.3 1018.2 1018.3 1021.6 1023.7 1024.2 1021.5 1020.5 MAX. QNH PRESSURE IN HPA 1031.1 1030.0 1021.3 1026.9 1027.4 1025.3 1023.4 1025.2 1029.1 1029.3 1031.5 1031.7 1031.7 DAY-HOUR 17- 6 1- 6 24- 6 22- 6 4-18 28- 6 29-21 8- 6 26- 6 16- 6 30- 6 1- 6 MIN. QNH PRESSURE IN HPA 1009.8 1010.6 1003.7 1008.9 1016.7 1012.6 1012.4 1013.2 1017.1 1017.4 1015.7 1010.4 1003.7 DAY-HOUR 6-12 10-12 13-21 4-12 22-12 12-15 3-12 24-15 1-12 4-12 7-15 24- 3 MEAN QFF PRESSURE IN HPA 1023.2 ****** 1012.1 1012.3 1008.5 1002.3 999.7 999.9 1005.8 1014.9 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.5 ****** 1020.7 1021.2 1016.3 1008.4 1008.3 1008.0 1015.4 1022.3 ****** ****** ****** DAY-HOUR 17- 6 **-** 22- 6 22- 6 4-15 1- 3 31- 0 8-15 26- 3 28- 6 **-** **-** MIN. QFF PRESSURE IN HPA 1007.6 ****** 999.8 1002.6 1001.2 995.9 994.1 993.8 998.2 1003.3 ****** ****** ****** DAY-HOUR 6-12 **-** 13-21 19-12 22- 9 12-15 25-21 25-12 10-12 4- 9 **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 799.9 ****** 793.7 798.7 800.1 798.1 797.1 797.3 799.9 801.5 ****** ****** ****** MAX. QFE PRESSURE IN HPA 807.0 ****** 799.1 803.1 803.0 800.8 799.0 801.0 804.8 805.3 ****** ****** ****** DAY 18 ** 24 30 13 28 30 7 27 16 ** ** MIN. QFE PRESSURE IN HPA 792.2 ****** 785.2 790.0 796.6 794.1 793.7 794.4 796.8 797.4 ****** ****** ****** DAY 3 ** 14 5 23 9 4 28 1 5 ** ** MEAN QNH PRESSURE IN HPA 1021.6 ****** 1014.1 1020.2 1021.9 1019.5 1018.3 1018.5 1021.6 1023.6 ****** ****** ****** MAX. QNH PRESSURE IN HPA 1030.3 ****** 1020.7 1025.6 1025.4 1022.8 1020.6 1023.0 1027.6 1028.2 ****** ****** ****** DAY 18 ** 24 30 13 28 30 7 27 16 ** ** MIN. QNH PRESSURE IN HPA 1012.3 ****** 1003.7 1009.6 1017.6 1014.6 1014.1 1015.0 1017.9 1018.6 ****** ****** ****** DAY 3 ** 14 5 23 9 4 28 1 5 ** ** MEAN QFF PRESSURE IN HPA 1021.6 ****** 1011.4 1012.4 1008.5 1002.9 1000.0 1000.2 1006.0 1014.0 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.4 ****** 1018.7 1018.3 1014.9 1007.3 1008.3 1006.3 1013.7 1020.9 ****** ****** ****** DAY 16 ** 24 2 13 2 31 9 27 25 ** ** MIN. QFF PRESSURE IN HPA 1012.2 ****** 1001.1 1004.8 1002.9 997.8 994.4 995.7 1000.6 1003.8 ****** ****** ****** DAY 6 ** 14 19 23 9 26 21 11 5 ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 800.4 798.5 793.8 798.9 800.3 798.6 797.4 797.6 800.2 801.7 802.0 799.9 799.1 MAX. QFE PRESSURE IN HPA 806.5 805.0 799.2 803.2 803.2 802.2 799.3 802.0 805.4 805.7 806.9 807.8 807.8 DAY 17 1 24 30 13 28 30 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 793.5 791.6 785.2 790.2 796.6 794.2 794.9 794.3 797.8 798.4 796.0 790.7 785.2 DAY 3 10 14 5 22 13 3 27 1 5 7 24 MEAN QNH PRESSURE IN HPA 1022.2 1019.9 1014.2 1020.4 1022.2 1020.0 1018.6 1018.9 1022.0 1023.8 1024.3 1021.6 1020.7 MAX. QNH PRESSURE IN HPA 1029.7 1027.9 1020.8 1025.7 1025.7 1024.5 1020.9 1024.2 1028.4 1028.7 1030.2 1031.3 1031.3 DAY 17 1 24 30 13 28 30 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1013.9 1011.5 1003.7 1009.8 1017.6 1014.7 1015.6 1014.8 1019.1 1019.8 1016.9 1010.4 1003.7 DAY 3 10 14 5 22 13 3 27 1 5 7 24 MEAN QFF PRESSURE IN HPA 1024.5 1019.0 1012.4 1013.2 1009.4 1004.1 1001.3 1001.7 1007.5 1016.4 1019.7 1021.3 1012.5 MAX. QFF PRESSURE IN HPA 1032.6 1028.6 1020.0 1020.9 1015.1 1008.4 1007.8 1006.4 1015.4 1022.1 1034.0 1035.1 1035.1 DAY 12 12 24 22 13 1 31 8 26 14 30 1 MIN. QFF PRESSURE IN HPA 1014.1 1010.5 1002.6 1005.2 1003.6 998.4 996.5 996.6 1002.0 1007.0 1006.8 1009.3 996.5 DAY 24 9 14 19 22 9 21 22 11 4 7 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 801.4 799.3 794.6 799.5 800.8 798.7 797.7 797.9 800.7 802.3 802.8 800.6 799.7 MAX. QFE PRESSURE IN HPA 807.6 806.7 799.6 804.2 804.0 802.9 800.0 802.8 806.0 806.2 808.0 808.1 808.1 DAY 17 1 24 22 11 28 30 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 795.0 792.0 786.3 791.4 797.0 794.3 794.9 795.0 798.1 798.6 796.0 793.0 786.3 DAY 6 10 14 5 22 12 2 26 28 4 7 31 MEAN QNH PRESSURE IN HPA 1023.5 1020.9 1015.3 1021.1 1022.7 1020.2 1019.0 1019.2 1022.6 1024.6 1025.2 1022.6 1021.4 MAX. QNH PRESSURE IN HPA 1031.1 1030.0 1021.3 1026.9 1026.7 1025.3 1021.8 1025.2 1029.1 1029.3 1031.5 1031.7 1031.7 DAY 17 1 24 22 11 28 30 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1015.7 1012.0 1005.1 1011.3 1018.1 1014.8 1015.6 1015.7 1019.5 1020.1 1016.9 1013.2 1005.1 DAY 6 10 14 5 22 12 2 26 28 4 7 31 MEAN QFF PRESSURE IN HPA 1025.3 ****** 1013.2 1013.1 1008.9 1002.7 1000.0 1000.5 1006.7 1015.9 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.5 ****** 1020.7 1021.2 1014.3 1007.7 1007.4 1005.4 1014.5 1022.3 ****** ****** ****** DAY 17 ** 22 22 13 1 30 8 30 28 ** ** MIN. QFF PRESSURE IN HPA 1013.7 ****** 1005.5 1003.6 1002.7 996.4 996.1 996.3 1001.8 1006.4 ****** ****** ****** DAY 6 ** 13 4 22 12 20 25 13 4 ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 800.7 798.7 794.3 799.1 800.5 798.0 797.0 797.0 799.7 801.5 802.1 800.0 799.1 MAX. QFE PRESSURE IN HPA 807.3 805.7 798.7 804.0 804.3 802.5 799.2 801.8 804.8 805.2 807.1 807.1 807.3 DAY 17 1 23 22 4 28 18 8 26 1 30 1 MIN. QFE PRESSURE IN HPA 792.6 791.4 786.3 791.0 796.4 793.8 793.0 793.9 797.2 797.4 796.5 792.5 786.3 DAY 6 10 14 4 22 12 3 26 1 4 7 30 MEAN QNH PRESSURE IN HPA 1022.7 1020.2 1014.9 1020.7 1022.4 1019.3 1018.1 1018.2 1021.5 1023.6 1024.4 1021.8 1020.6 MAX. QNH PRESSURE IN HPA 1030.7 1028.7 1020.2 1026.7 1027.0 1024.8 1020.8 1024.0 1027.6 1028.1 1030.4 1030.4 1030.7 DAY 17 1 23 22 4 28 18 8 26 1 30 1 MIN. QNH PRESSURE IN HPA 1012.8 1011.3 1005.1 1010.8 1017.4 1014.2 1013.2 1014.3 1018.4 1018.6 1017.5 1012.6 1005.1 DAY 6 10 14 4 22 12 3 26 1 4 7 30 MEAN QFF PRESSURE IN HPA 1022.6 ****** 1012.0 1012.0 1008.3 1001.7 998.8 998.7 1004.8 1013.6 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.8 ****** 1017.6 1019.7 1015.5 1006.2 1004.5 1004.6 1012.8 1019.2 ****** ****** ****** DAY 17 ** 23 22 4 2 30 8 30 14 ** ** MIN. QFF PRESSURE IN HPA 1012.2 ****** 1003.4 1003.9 1001.2 996.6 994.7 994.2 999.1 1003.3 ****** ****** ****** DAY 6 ** 13 4 22 12 26 25 10 4 ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 799.8 797.8 793.6 798.2 799.7 797.1 796.2 796.3 798.6 801.0 801.3 798.9 798.2 MAX. QFE PRESSURE IN HPA 806.4 805.4 797.7 803.2 803.0 801.9 798.8 801.8 803.8 805.4 806.3 806.0 806.4 DAY 17 1 7 22 4 28 30 8 26 24 30 1 MIN. QFE PRESSURE IN HPA 790.2 790.8 786.3 789.4 795.8 792.8 792.3 793.0 796.2 796.4 796.5 791.0 786.3 DAY 6 10 14 4 22 12 3 28 1 4 7 30 MEAN QNH PRESSURE IN HPA 1021.5 1019.1 1014.0 1019.6 1021.4 1018.3 1017.2 1017.3 1020.1 1023.0 1023.4 1020.5 1019.6 MAX. QNH PRESSURE IN HPA 1029.6 1028.4 1019.0 1025.7 1025.4 1024.1 1020.3 1024.0 1026.4 1028.4 1029.5 1029.1 1029.6 DAY 17 1 7 22 4 28 30 8 26 24 30 1 MIN. QNH PRESSURE IN HPA 1009.8 1010.6 1005.1 1008.9 1016.7 1013.0 1012.4 1013.2 1017.1 1017.4 1017.5 1010.8 1005.1 DAY 6 10 14 4 22 12 3 28 1 4 7 30 MEAN QFF PRESSURE IN HPA 1020.9 ****** 1011.3 1011.6 1007.9 1001.6 998.9 998.9 1004.3 1013.6 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1028.9 ****** 1017.4 1019.1 1013.7 1007.1 1007.5 1007.7 1012.3 1022.2 ****** ****** ****** DAY 12 ** 23 22 4 28 30 8 26 24 ** ** MIN. QFF PRESSURE IN HPA 1007.6 ****** 1002.1 1002.6 1001.4 996.2 994.8 993.8 998.2 1003.4 ****** ****** ****** DAY 6 ** 13 19 22 12 20 25 10 4 ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 800.4 798.0 793.7 798.6 799.5 797.1 796.4 796.4 799.0 801.4 801.7 799.4 798.5 MAX. QFE PRESSURE IN HPA 806.6 805.4 797.5 802.2 803.2 801.1 799.8 801.8 803.8 805.4 806.9 806.5 806.9 DAY 18 1 7 22 4 28 29 8 25 18 30 1 MIN. QFE PRESSURE IN HPA 790.5 790.8 787.2 789.8 795.8 792.5 792.3 793.0 796.2 797.0 795.0 791.0 787.2 DAY 6 10 13 4 22 12 3 24 10 21 7 30 MEAN QNH PRESSURE IN HPA 1022.2 1019.4 1014.1 1020.0 1021.2 1018.2 1017.4 1017.3 1020.6 1023.4 1023.9 1021.0 1019.9 MAX. QNH PRESSURE IN HPA 1029.8 1028.4 1018.7 1024.5 1025.7 1023.1 1021.5 1024.0 1026.4 1028.4 1030.2 1029.7 1030.2 DAY 18 1 7 22 4 28 29 8 25 18 30 1 MIN. QNH PRESSURE IN HPA 1010.2 1010.6 1006.2 1009.3 1016.7 1012.6 1012.4 1013.2 1017.1 1018.1 1015.7 1010.8 1006.2 DAY 6 10 13 4 22 12 3 24 10 21 7 30 MEAN QFF PRESSURE IN HPA 1024.2 1018.3 1012.3 1012.4 1008.4 1002.1 1000.1 1000.1 1005.9 1016.0 1019.4 1020.7 1011.7 MAX. QFF PRESSURE IN HPA 1033.0 1027.7 1017.7 1018.6 1016.3 1006.1 1008.2 1008.0 1013.4 1021.8 1033.6 1032.6 1033.6 DAY 12 12 23 22 4 3 29 8 26 18 30 1 MIN. QFF PRESSURE IN HPA 1008.5 1010.4 1003.5 1003.7 1002.0 995.9 994.7 994.3 999.7 1006.3 1007.2 1011.1 994.3 DAY 6 10 13 19 22 12 20 22 10 4 7 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 800.2 ****** 794.3 799.3 800.4 798.0 797.4 797.4 800.2 801.8 ****** ****** ****** MAX. QFE PRESSURE IN HPA 807.3 ****** 798.7 803.3 804.6 801.8 801.0 802.1 804.8 805.5 ****** ****** ****** DAY 17 ** 23 22 4 28 29 8 25 1 ** ** MIN. QFE PRESSURE IN HPA 790.6 ****** 786.2 790.6 796.7 793.8 793.7 794.2 797.4 797.8 ****** ****** ****** DAY 6 ** 13 4 22 12 3 25 10 4 ** ** MEAN QNH PRESSURE IN HPA 1022.0 ****** 1014.9 1020.9 1022.3 1019.4 1018.6 1018.6 1022.0 1024.0 ****** ****** ****** MAX. QNH PRESSURE IN HPA 1030.7 ****** 1020.2 1025.8 1027.4 1024.0 1023.0 1024.3 1027.6 1028.5 ****** ****** ****** DAY 17 ** 23 22 4 28 29 8 25 1 ** ** MIN. QNH PRESSURE IN HPA 1010.3 ****** 1004.9 1010.3 1017.8 1014.2 1014.1 1014.7 1018.6 1019.1 ****** ****** ****** DAY 6 ** 13 4 22 12 3 25 10 4 ** ** MEAN QFF PRESSURE IN HPA 1024.0 ****** 1012.8 1012.4 1008.5 1001.7 999.7 999.9 1006.2 1015.3 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.4 ****** 1020.5 1018.7 1014.1 1005.9 1008.2 1005.1 1013.1 1020.3 ****** ****** ****** DAY 12 ** 22 22 5 3 29 8 30 28 ** ** MIN. QFF PRESSURE IN HPA 1007.9 ****** 1001.5 1003.2 1002.0 996.4 995.1 995.3 1000.3 1005.3 ****** ****** ****** DAY 6 ** 13 19 22 12 20 21 10 4 ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 800.1 ****** 794.2 799.3 800.3 798.1 797.5 797.5 800.3 801.5 ****** ****** ****** MAX. QFE PRESSURE IN HPA 807.3 ****** 798.7 803.1 803.2 801.7 801.3 801.6 804.8 805.5 ****** ****** ****** DAY 17 ** 23 16 4 28 29 6 25 15 ** ** MIN. QFE PRESSURE IN HPA 791.7 ****** 785.2 790.3 796.8 794.1 793.7 794.7 797.4 797.8 ****** ****** ****** DAY 6 ** 13 4 22 8 3 25 1 4 ** ** MEAN QNH PRESSURE IN HPA 1021.9 ****** 1014.7 1020.9 1022.2 1019.5 1018.7 1018.7 1022.1 1023.6 ****** ****** ****** MAX. QNH PRESSURE IN HPA 1030.7 ****** 1020.2 1025.6 1025.7 1023.9 1023.4 1023.7 1027.6 1028.5 ****** ****** ****** DAY 17 ** 23 16 4 28 29 6 25 15 ** ** MIN. QNH PRESSURE IN HPA 1011.7 ****** 1003.7 1010.0 1017.9 1014.6 1014.1 1015.3 1018.6 1019.1 ****** ****** ****** DAY 6 ** 13 4 22 8 3 25 1 4 ** ** MEAN QFF PRESSURE IN HPA 1022.1 ****** 1011.9 1011.8 1008.1 1001.7 999.4 999.3 1005.6 1013.5 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1030.9 ****** 1017.2 1018.0 1014.8 1006.5 1007.0 1004.3 1012.6 1019.3 ****** ****** ****** DAY 17 ** 23 1 12 1 29 8 30 13 ** ** MIN. QFF PRESSURE IN HPA 1011.7 ****** 999.8 1003.4 1002.7 996.7 994.1 994.8 999.5 1003.6 ****** ****** ****** DAY 6 ** 13 19 22 8 25 20 10 4 ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.5 1.9 7.2 12.1 19.2 23.5 27.9 26.8 22.7 16.9 8.9 4.0 14.2 MINIMUN AIR TEMPERATURE (C) -5.4 -4.0 0.8 4.6 9.5 12.2 16.2 16.3 11.0 7.6 2.7 -1.9 5.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 2 0 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 21 14 2 0 0 0 0 0 0 0 2 8 47 DAYS WITH FREEZING MIN.<= 0 29 27 14 5 0 0 0 0 0 0 10 17 102 TEMPERATURE RECORDS LOWEST(C) -14.0 -9.0 -4.0 -3.4 4.6 8.0 11.0 9.0 7.0 4.5 -4.2 -16.4 -16.4 DAY 20 7 13 2 8 20 2 18 25 23 15 29 MAXIMUM AIR TEMPERATURE (C) 3.7 6.3 11.7 17.1 24.1 29.2 34.1 32.5 29.4 22.9 13.6 8.6 19.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 8 30 26 13 0 0 0 77 DAYS WITH MAXIMUM TEMP. <= 0 2 1 0 0 0 0 0 0 0 0 0 2 5 TEMPERATURE RECORDS HIGHEST(C) 8.6 12.0 17.6 22.0 29.0 33.0 37.6 35.0 33.8 26.0 21.0 15.0 37.6 DAY 7 29 30 18 27 13 23 1 11 3 3 5 DIF. BETWEEN (MAX.-MIN.) (C) 9.1 10.3 10.9 12.5 14.6 17.0 17.9 16.2 18.4 15.3 10.9 10.5 13.6 MEAN DAILY TEMP. (MDT) (C) -0.9 1.2 6.2 10.8 16.8 20.7 25.2 24.4 20.2 15.2 8.1 3.4 12.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 13.7 129.1 104.7 16.1 0.0 0.0 0.0 263.7 HEATING DEG. DAYS(BASE 18 0C) 584.6 472.3 350.7 215.2 47.6 0.4 0.0 0.0 2.8 86.7 296.4 453.6 2510.4 DEWPOINT (MEAN C) -9.0 -7.3 -4.3 -0.8 -0.1 1.1 3.7 4.8 -2.1 -3.3 -4.2 -6.2 -2.3 MIXING RATIO (G/KG) 2.61 2.93 3.69 4.93 4.93 5.29 6.44 6.94 4.26 3.92 3.69 3.18 4.40 VAPOUR PRESSURE (HPA) 3.32 3.73 4.68 6.27 6.27 6.72 8.13 8.77 5.43 5.01 4.73 4.05 5.59 SATURATION DEF. (HPA) 2.80 3.56 5.87 8.53 16.84 23.48 31.58 27.98 23.84 15.05 7.34 4.53 14.28 RELATIVE HUMIDITY (MEAN %) 56 54 49 46 30 25 23 26 21 28 44 52 38 RELATIVE HUMIDITY (MAX. %) 69 71 69 67 48 39 39 40 34 41 64 68 54 RELATIVE HUMIDITY (MIN. %) 42 39 35 31 20 17 15 19 14 18 30 37 26 RELATIVE HUMIDITY (MEAN% 03UTC) 65 64 65 65 45 39 39 40 33 40 61 62 52 RELATIVE HUMIDITY (MEAN% 09UTC) 51 48 44 38 25 20 19 22 16 21 34 46 32 RELATIVE HUMIDITY (MEAN% 15UTC) 55 51 43 42 26 19 18 22 17 27 45 52 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.6 75.2 91.8 52.5 4.0 0.0 0.0 0.0 0.5 0.4 37.4 20.0 322.4 DAYS WITH PRECIPITATION >=10 2 2 5 2 0 0 0 0 0 0 1 0 12 DAYS WITH PRECIPITATION >= 5 2 5 6 3 0 0 0 0 0 0 2 1 19 DAYS WITH PRECIPITATION >= 1 5 9 6 10 2 0 0 0 0 0 2 4 38 DAYS WITH PRECIPITATION 7 10 9 11 2 1 0 0 1 1 4 6 52 GREATEST DAILY PRECIPITATION 22.0 36.0 27.0 17.0 2.0 0.0 0.0 0.0 0.5 0.4 27.0 9.0 36.0 DAY 16 24 9 21 2 ** ** ** 2 15 13 26 DAY WITH THUNDER STORM 0 0 0 1 0 0 0 0 1 1 1 0 4 DAYS WITH SNOW OR SLEET 7 6 2 0 0 0 0 0 0 0 0 1 16 DAYS WITH DUST 1 0 3 3 1 0 1 0 0 0 0 0 9 WIND DIRECTION (PREVAILING) 135 135 180 135 270 135 135 135 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 6.8 8.4 10.8 7.6 8.5 9.0 8.8 8.3 9.2 7.9 6.8 6.7 8.0 PREVAILING WIND PERCENT 15.5 23.6 18.1 16.7 25.8 18.7 22.6 25.8 29.3 24.5 26.7 24.0 21.3 CALMS PERCENT OF WIND 59.4 38.9 31.6 34.0 22.6 29.3 29.7 25.8 24.7 40.0 42.7 40.3 34.9 NO. OF WIND OBSERVATION 155 144 155 150 155 150 155 155 150 155 150 154 1828 VECTOR WIND DIRECTION (MEAN) 122 133 191 200 222 192 165 151 144 146 160 162 167 VECTOR WIND MAGNITUDE(KNOTS) 2.3 3.7 3.3 2.7 3.2 2.2 2.1 2.5 1.3 2.0 3.1 2.9 2.3 WIND STEADINESES (MEAN %) 65.7 67.3 50.0 46.6 49.2 32.8 34.4 42.4 20.0 42.6 67.4 65.9 41.1 WIND SPEED (MEAN KNOTS) 3.5 5.5 6.6 5.8 6.5 6.7 6.1 5.9 6.5 4.7 4.6 4.4 5.6 FASTEST WIND DIRECTION 100 160 180 280 70 120 120 90 240 240 220 180 240 FASTEST WIND SPEED (KNOTS) 23 19 21 19 21 21 23 23 29 23 19 19 29 DAY 18 1 21 20 17 8 5 9 2 20 28 25 DAYS WITH SKY CLEAR (0-2)/8 10 10 15 12 22 28 30 27 28 21 11 14 228 DAYS WITH P.CLOUDY (3-6)/8 14 11 9 7 8 2 1 4 2 10 14 9 91 DAYS WITH CLOUDY (7-8)/8 7 8 7 11 1 0 0 0 0 0 5 8 47 DAYS WITH VISIBILITY =< 2 KM 4 1 1 0 0 1 1 1 0 0 0 1 10 DURATION OF SUNSHINE HOURS 168.1 181.2 225.8 201.1 339.3 365.1 371.8 290.0 317.5 272.0 197.0 163.0 3091.9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 797.0 795.8 794.9 797.8 798.6 796.3 793.7 795.3 798.9 801.6 801.0 798.2 797.4 MAX. QFE PRESSURE IN HPA 804.0 802.4 801.2 803.2 801.9 802.2 801.1 799.9 804.0 807.0 807.9 805.0 807.9 DAY-HOUR 10- 6 7- 6 17- 6 9- 6 8- 6 12- 6 31- 3 21- 6 15- 6 28- 6 6- 6 4- 6 MIN. QFE PRESSURE IN HPA 790.3 788.5 787.7 792.4 794.9 790.0 789.4 791.0 794.7 796.6 794.6 782.5 782.5 DAY-HOUR 29- 3 2-12 5- 3 25-12 1- 3 30-15 18-12 2-15 17-12 30-12 28-12 27- 3 MEAN QNH PRESSURE IN HPA 1018.1 1016.7 1015.6 1019.1 1020.1 1017.3 1014.1 1016.0 1020.5 1023.8 1023.0 1019.5 1018.7 MAX. QNH PRESSURE IN HPA 1026.7 1024.7 1023.2 1025.7 1024.1 1024.5 1023.1 1021.7 1026.7 1030.3 1031.4 1027.9 1031.4 DAY-HOUR 10- 6 7- 6 17- 6 9- 6 8- 6 12- 6 31- 3 21- 6 15- 6 28- 6 6- 6 4- 6 MIN. QNH PRESSURE IN HPA 1010.0 1007.8 1006.8 1012.5 1015.6 1009.6 1008.9 1010.8 1015.3 1017.6 1015.2 1000.4 1000.4 DAY-HOUR 29- 3 2-12 5- 3 25-12 1- 3 30-15 18-12 2-15 17-12 30-12 28-12 27- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 796.9 795.8 794.9 797.8 798.8 797.0 794.5 796.0 799.5 801.9 801.3 798.2 797.7 MAX. QFE PRESSURE IN HPA 803.6 801.8 800.6 802.3 801.4 801.5 801.1 799.3 803.9 806.0 807.0 804.2 807.0 DAY 3 7 17 13 21 12 31 21 15 28 6 4 MIN. QFE PRESSURE IN HPA 790.3 788.6 787.7 793.4 794.9 793.0 791.1 792.4 796.5 797.2 795.7 782.5 782.5 DAY 29 2 5 25 1 24 18 3 17 31 29 27 MEAN QNH PRESSURE IN HPA 1018.0 1016.6 1015.6 1019.1 1020.3 1018.1 1015.1 1016.9 1021.2 1024.1 1023.3 1019.6 1019.0 MAX. QNH PRESSURE IN HPA 1026.2 1024.0 1022.5 1024.6 1023.5 1023.6 1023.1 1020.9 1026.5 1029.1 1030.3 1026.9 1030.3 DAY 3 7 17 13 21 12 31 21 15 28 6 4 MIN. QNH PRESSURE IN HPA 1010.0 1007.9 1006.8 1013.7 1015.6 1013.2 1010.9 1012.5 1017.5 1018.4 1016.5 1000.4 1000.4 DAY 29 2 5 25 1 24 18 3 17 31 29 27 MEAN QFF PRESSURE IN HPA 1021.5 1017.5 1011.7 1012.0 1007.8 1002.3 996.0 998.5 1006.7 1014.1 1019.0 1019.1 1010.5 MAX. QFF PRESSURE IN HPA 1032.8 1030.3 1022.2 1021.1 1012.7 1008.2 1003.5 1001.7 1012.4 1019.8 1027.1 1036.2 1036.2 DAY 20 7 15 3 8 4 31 27 25 28 15 29 MIN. QFF PRESSURE IN HPA 1009.3 1004.6 1002.2 1001.6 1000.3 996.8 990.3 993.2 1000.3 1007.1 1012.8 999.9 990.3 DAY 29 2 27 25 28 29 5 3 17 31 28 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 797.7 796.7 795.6 798.5 799.3 797.2 794.7 796.3 800.0 802.6 802.1 799.0 798.3 MAX. QFE PRESSURE IN HPA 804.0 802.4 801.2 803.2 801.9 802.2 801.0 799.9 804.0 807.0 807.9 805.0 807.9 DAY 10 7 17 9 8 12 31 21 15 28 6 4 MIN. QFE PRESSURE IN HPA 792.1 789.2 789.2 793.8 796.2 793.2 791.3 792.8 796.8 797.8 796.8 784.5 784.5 DAY 29 2 5 25 1 24 18 3 17 31 20 27 MEAN QNH PRESSURE IN HPA 1019.0 1017.7 1016.5 1020.0 1021.0 1018.3 1015.3 1017.2 1021.8 1025.0 1024.3 1020.6 1019.7 MAX. QNH PRESSURE IN HPA 1026.7 1024.7 1023.2 1025.7 1024.1 1024.5 1023.0 1021.7 1026.7 1030.3 1031.4 1027.9 1031.4 DAY 10 7 17 9 8 12 31 21 15 28 6 4 MIN. QNH PRESSURE IN HPA 1012.1 1008.6 1008.6 1014.2 1017.1 1013.5 1011.2 1013.0 1017.9 1019.1 1017.9 1002.9 1002.9 DAY 29 2 5 25 1 24 18 3 17 31 20 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 797.3 796.2 795.4 798.1 798.9 796.4 793.8 795.4 799.1 801.7 801.0 798.3 797.6 MAX. QFE PRESSURE IN HPA 803.7 801.6 800.3 803.0 801.4 801.8 800.4 798.9 803.0 805.3 806.1 804.5 806.1 DAY 3 6 17 12 8 12 31 21 15 28 6 3 MIN. QFE PRESSURE IN HPA 791.0 788.9 789.6 793.6 796.1 792.4 790.4 792.2 795.8 797.5 795.1 784.6 784.6 DAY 18 2 5 25 1 24 18 3 17 31 28 27 MEAN QNH PRESSURE IN HPA 1018.5 1017.1 1016.2 1019.5 1020.4 1017.4 1014.2 1016.2 1020.7 1023.8 1023.0 1019.7 1018.9 MAX. QNH PRESSURE IN HPA 1026.3 1023.7 1022.1 1025.4 1023.5 1024.0 1022.3 1020.4 1025.4 1028.2 1029.2 1027.3 1029.2 DAY 3 6 17 12 8 12 31 21 15 28 6 3 MIN. QNH PRESSURE IN HPA 1010.8 1008.2 1009.1 1014.0 1017.0 1012.5 1010.1 1012.3 1016.7 1018.7 1015.8 1003.0 1003.0 DAY 18 2 5 25 1 24 18 3 17 31 28 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 796.4 795.1 794.4 797.2 798.2 795.5 792.8 794.3 797.9 800.8 800.1 797.4 796.7 MAX. QFE PRESSURE IN HPA 802.8 800.8 799.3 801.8 800.9 800.7 798.5 797.4 801.8 804.5 805.0 803.0 805.0 DAY 3 6 17 8 4 12 31 21 14 16 5 3 MIN. QFE PRESSURE IN HPA 791.4 788.5 789.3 792.4 795.8 790.2 789.4 791.0 794.7 796.6 794.6 785.1 785.1 DAY 18 2 4 25 1 30 18 24 17 30 28 27 MEAN QNH PRESSURE IN HPA 1017.4 1015.8 1014.9 1018.4 1019.5 1016.3 1013.1 1014.9 1019.2 1022.7 1022.0 1018.6 1017.7 MAX. QNH PRESSURE IN HPA 1025.2 1022.8 1020.9 1024.0 1022.9 1022.6 1020.0 1018.6 1024.0 1027.3 1027.9 1025.4 1027.9 DAY 3 6 17 8 4 12 31 21 14 16 5 3 MIN. QNH PRESSURE IN HPA 1011.3 1007.8 1008.7 1012.5 1016.7 1009.8 1008.9 1010.8 1015.3 1017.6 1015.2 1003.6 1003.6 DAY 18 2 4 25 1 30 18 24 17 30 28 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 796.8 795.5 794.5 797.3 798.1 795.5 792.9 794.4 798.1 801.2 800.7 797.9 796.9 MAX. QFE PRESSURE IN HPA 803.4 801.2 799.0 802.2 801.2 800.3 798.0 797.4 802.0 805.0 805.6 803.9 805.6 DAY 3 6 17 8 4 12 30 21 14 16 5 3 MIN. QFE PRESSURE IN HPA 792.1 788.8 789.9 793.0 795.9 790.0 789.8 791.0 795.0 796.9 795.0 787.1 787.1 DAY 18 2 3 25 23 30 8 2 17 30 30 27 MEAN QNH PRESSURE IN HPA 1017.9 1016.2 1015.0 1018.5 1019.5 1016.3 1013.1 1014.9 1019.5 1023.3 1022.6 1019.2 1018.0 MAX. QNH PRESSURE IN HPA 1025.9 1023.2 1020.6 1024.5 1023.2 1022.1 1019.3 1018.6 1024.2 1027.9 1028.6 1026.5 1028.6 DAY 3 6 17 8 4 12 30 21 14 16 5 3 MIN. QNH PRESSURE IN HPA 1012.1 1008.1 1009.5 1013.2 1016.8 1009.6 1009.3 1010.8 1015.7 1018.0 1015.7 1006.0 1006.0 DAY 18 2 3 25 23 30 8 2 17 30 30 27 MEAN QFF PRESSURE IN HPA 1021.3 1017.2 1011.2 1011.3 1006.9 1000.4 993.9 996.4 1004.9 1013.2 1018.4 1018.8 1009.5 MAX. QFF PRESSURE IN HPA 1031.7 1028.5 1019.4 1018.8 1013.8 1006.1 1000.2 1000.6 1010.3 1019.2 1026.7 1037.2 1037.2 DAY 2 6 15 8 4 1 30 31 25 23 15 29 MIN. QFF PRESSURE IN HPA 1012.3 1005.9 1003.8 1003.0 1001.9 993.2 988.0 990.6 998.9 1008.5 1009.9 1004.2 988.0 DAY 25 2 3 30 28 30 15 2 17 8 10 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -5.7 -4.3 5.1 12.4 17.6 24.8 28.4 27.7 22.2 16.8 8.6 1.3 12.9 MINIMUN AIR TEMPERATURE (C) -11.3 -10.8 -0.8 4.7 8.3 12.2 17.1 17.0 10.9 6.6 2.1 -4.2 4.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 3 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 30 24 5 2 0 0 0 0 0 0 0 18 79 DAYS WITH FREEZING MIN.<= 0 31 28 17 4 0 0 0 0 0 0 8 25 113 TEMPERATURE RECORDS LOWEST(C) -20.4 -18.4 -12.6 -7.0 3.0 8.4 14.0 14.2 6.0 1.6 -2.2 -11.0 -20.4 DAY 31 15 31 2 1 13 25 24 30 23 24 17 MAXIMUM AIR TEMPERATURE (C) -0.9 0.5 9.7 17.3 22.4 30.5 33.7 33.3 28.3 22.8 13.2 5.9 18.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 20 31 31 12 0 0 0 94 DAYS WITH MAXIMUM TEMP. <= 0 19 13 1 0 0 0 0 0 0 0 0 1 34 TEMPERATURE RECORDS HIGHEST(C) 4.0 9.0 15.2 23.0 29.0 35.0 37.2 34.4 33.0 27.8 17.2 12.8 37.2 DAY 1 28 7 17 31 27 10 11 1 8 5 1 DIF. BETWEEN (MAX.-MIN.) (C) 10.4 11.3 10.5 12.6 14.1 18.3 16.6 16.3 17.4 16.2 11.1 10.1 13.8 MEAN DAILY TEMP. (MDT) (C) -6.1 -5.2 4.4 11.0 15.4 21.4 25.4 25.2 19.6 14.7 7.7 0.9 11.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 29.7 136.3 128.7 22.6 0.0 0.0 0.0 317.3 HEATING DEG. DAYS(BASE 18 0C) 746.7 648.6 420.5 209.5 92.4 1.0 0.0 0.0 12.9 103.2 310.1 531.2 3076.2 DEWPOINT (MEAN C) -11.6 -10.0 -2.1 -0.5 0.8 -2.7 1.5 0.3 -2.6 -3.5 -2.0 -5.3 -3.2 MIXING RATIO (G/KG) 2.13 2.45 4.21 4.83 5.20 4.10 5.55 4.98 4.04 3.77 4.37 3.39 4.09 VAPOUR PRESSURE (HPA) 2.71 3.13 5.35 6.15 6.63 5.22 7.04 6.33 5.15 4.83 5.58 4.33 5.21 SATURATION DEF. (HPA) 1.53 1.64 3.85 8.91 14.77 27.83 33.20 32.13 23.34 15.37 5.92 2.71 14.27 RELATIVE HUMIDITY (MEAN %) 65 66 63 46 36 19 19 18 21 27 52 63 41 RELATIVE HUMIDITY (MAX. %) 75 78 80 66 58 32 29 27 34 41 73 75 56 RELATIVE HUMIDITY (MIN. %) 54 54 47 31 24 11 14 13 13 18 36 52 31 RELATIVE HUMIDITY (MEAN% 03UTC) 67 72 76 65 57 32 29 27 34 39 70 69 53 RELATIVE HUMIDITY (MEAN% 09UTC) 62 59 54 36 28 14 16 14 16 22 44 57 35 RELATIVE HUMIDITY (MEAN% 15UTC) 67 68 63 42 31 13 15 15 16 25 51 65 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 39.1 40.9 108.4 37.1 21.0 0.0 0.0 0.0 0.0 0.9 76.5 95.0 418.9 DAYS WITH PRECIPITATION >=10 0 2 3 1 1 0 0 0 0 0 3 2 12 DAYS WITH PRECIPITATION >= 5 2 2 5 3 2 0 0 0 0 0 5 4 23 DAYS WITH PRECIPITATION >= 1 10 5 11 5 2 0 0 0 0 0 7 6 46 DAYS WITH PRECIPITATION 15 9 16 10 2 0 0 0 0 1 9 6 68 GREATEST DAILY PRECIPITATION 9.0 19.0 34.0 16.0 12.0 0.0 0.0 0.0 0.0 0.9 29.0 38.0 38.0 DAY 3 23 28 30 7 ** ** ** ** 25 15 4 DAY WITH THUNDER STORM 0 0 1 4 0 0 0 0 0 0 1 1 7 DAYS WITH SNOW OR SLEET 9 7 6 0 0 0 0 0 0 0 0 2 24 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 135 135 135 135 135 135 135 135 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 6.8 7.8 7.1 6.2 6.4 7.1 8.2 7.7 7.8 7.9 6.4 8.5 7.4 PREVAILING WIND PERCENT 25.2 25.0 27.1 26.0 17.4 19.3 29.7 29.7 26.0 30.3 19.3 38.7 26.2 CALMS PERCENT OF WIND 53.5 62.1 43.9 40.7 33.5 35.3 34.8 26.5 26.0 35.5 58.0 38.7 40.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 120 120 136 141 210 195 120 129 174 138 155 129 137 VECTOR WIND MAGNITUDE(KNOTS) 3.0 2.6 3.3 1.4 1.2 1.6 3.7 3.0 0.9 1.9 1.7 4.3 2.2 WIND STEADINESES (MEAN %) 85.7 86.7 73.3 35.9 27.3 35.6 69.8 52.6 15.8 40.4 56.7 82.7 48.9 WIND SPEED (MEAN KNOTS) 3.5 3.0 4.5 3.9 4.4 4.5 5.3 5.7 5.7 4.7 3.0 5.2 4.5 FASTEST WIND DIRECTION 110 100 180 360 160 280 90 100 280 120 210 170 280 FASTEST WIND SPEED (KNOTS) 16 14 19 14 16 16 16 16 21 17 12 14 21 DAY 22 4 27 24 7 9 20 17 28 2 16 1 DAYS WITH SKY CLEAR (0-2)/8 17 14 11 9 22 30 31 24 30 23 17 16 244 DAYS WITH P.CLOUDY (3-6)/8 8 11 10 13 5 0 0 7 0 7 9 13 83 DAYS WITH CLOUDY (7-8)/8 6 3 10 8 4 0 0 0 0 1 4 2 38 DAYS WITH VISIBILITY =< 2 KM 5 3 6 0 0 0 0 0 0 0 1 0 15 DURATION OF SUNSHINE HOURS 207.0 218.5 196.0 224.3 308.4 384.0 375.4 311.7 317.6 279.3 201.6 219.9 3243.7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 795.7 797.8 795.2 799.7 799.6 796.9 796.8 796.7 798.7 802.1 801.2 798.2 798.2 MAX. QFE PRESSURE IN HPA 800.0 804.0 801.3 804.3 802.1 801.0 800.4 801.2 805.4 807.4 805.7 803.2 807.4 DAY-HOUR 18- 9 25- 6 1- 6 9- 6 24- 6 4- 6 9- 3 26- 6 24- 6 27- 6 29- 6 18-15 MIN. QFE PRESSURE IN HPA 787.9 789.0 786.5 795.6 795.7 793.2 792.0 791.0 794.2 797.5 797.0 792.1 786.5 DAY-HOUR 11-15 14- 3 29-12 29-12 31-12 10- 3 5-12 1-12 13-12 1-12 16-12 5- 3 MEAN QNH PRESSURE IN HPA 1016.5 1019.1 1015.9 1021.5 1021.3 1018.0 1017.9 1017.7 1020.2 1024.3 1023.2 1019.6 1019.6 MAX. QNH PRESSURE IN HPA 1021.8 1026.7 1023.4 1027.0 1024.3 1023.0 1022.3 1023.2 1028.4 1030.8 1028.7 1025.7 1030.8 DAY-HOUR 18- 9 25- 6 1- 6 9- 6 24- 6 4- 6 9- 3 26- 6 24- 6 27- 6 29- 6 18-15 MIN. QNH PRESSURE IN HPA 1007.0 1008.4 1005.3 1016.4 1016.5 1013.5 1012.0 1010.8 1014.7 1018.7 1018.1 1012.1 1005.3 DAY-HOUR 11-15 14- 3 29-12 29-12 31-12 10- 3 5-12 1-12 13-12 1-12 16-12 5- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 795.6 797.5 795.1 799.8 799.9 797.4 797.5 797.4 799.3 802.6 801.4 798.3 798.5 MAX. QFE PRESSURE IN HPA 799.9 802.4 800.5 803.5 801.8 800.7 800.4 800.5 804.5 806.8 805.3 803.0 806.8 DAY 31 8 1 10 25 4 9 26 24 27 29 19 MIN. QFE PRESSURE IN HPA 789.4 789.0 786.7 796.2 797.2 793.2 794.0 793.0 795.4 798.0 797.8 792.1 786.7 DAY 12 14 29 23 7 10 5 2 13 31 16 5 MEAN QNH PRESSURE IN HPA 1016.4 1018.8 1015.8 1021.5 1021.6 1018.6 1018.8 1018.6 1020.9 1024.9 1023.5 1019.7 1019.9 MAX. QNH PRESSURE IN HPA 1021.7 1024.7 1022.4 1026.0 1024.0 1022.6 1022.3 1022.4 1027.3 1030.1 1028.2 1025.4 1030.1 DAY 31 8 1 10 25 4 9 26 24 27 29 19 MIN. QNH PRESSURE IN HPA 1008.9 1008.4 1005.6 1017.1 1018.4 1013.5 1014.5 1013.2 1016.2 1019.3 1019.1 1012.1 1005.6 DAY 12 14 29 23 7 10 5 2 13 31 16 5 MEAN QFF PRESSURE IN HPA 1024.0 1026.2 1014.0 1014.3 1010.2 1002.2 999.1 999.6 1006.7 1015.0 1019.4 1021.4 1012.7 MAX. QFF PRESSURE IN HPA 1037.2 1036.0 1027.0 1024.5 1017.3 1007.7 1003.3 1004.0 1014.9 1021.5 1025.0 1031.3 1037.2 DAY 31 8 31 2 9 13 29 26 24 27 26 19 MIN. QFF PRESSURE IN HPA 1011.8 1013.4 1004.5 1007.9 1003.0 996.1 994.9 994.6 1000.4 1009.1 1013.7 1010.0 994.6 DAY 12 23 28 14 31 30 5 1 6 31 20 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 796.5 798.6 795.9 800.5 800.4 797.7 797.8 797.7 799.8 803.3 802.2 799.0 799.1 MAX. QFE PRESSURE IN HPA 800.0 804.0 801.3 804.3 802.1 801.0 800.3 801.2 805.4 807.4 805.7 803.0 807.4 DAY 19 25 1 9 24 4 9 26 24 27 29 19 MIN. QFE PRESSURE IN HPA 791.0 791.9 786.8 796.9 798.0 794.0 794.0 793.1 796.1 799.4 798.5 794.1 786.8 DAY 17 14 29 23 31 10 5 2 13 31 16 5 MEAN QNH PRESSURE IN HPA 1017.5 1020.0 1016.7 1022.4 1022.2 1019.0 1019.1 1019.0 1021.6 1025.8 1024.4 1020.6 1020.7 MAX. QNH PRESSURE IN HPA 1021.8 1026.7 1023.4 1027.0 1024.3 1023.0 1022.1 1023.2 1028.4 1030.8 1028.7 1025.4 1030.8 DAY 19 25 1 9 24 4 9 26 24 27 29 19 MIN. QNH PRESSURE IN HPA 1010.8 1011.9 1005.7 1018.0 1019.3 1014.5 1014.5 1013.4 1017.0 1021.1 1020.0 1014.6 1005.7 DAY 17 14 29 23 31 10 5 2 13 31 16 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 796.1 798.2 795.6 800.0 799.8 797.1 797.1 796.9 798.9 802.3 801.3 798.3 798.5 MAX. QFE PRESSURE IN HPA 800.0 804.0 800.6 804.1 801.8 800.2 800.0 800.3 804.5 806.0 805.0 802.6 806.0 DAY 18 25 1 9 24 4 20 26 24 25 28 18 MIN. QFE PRESSURE IN HPA 791.0 791.7 787.2 796.3 796.5 793.8 793.0 792.0 795.2 798.6 797.6 793.6 787.2 DAY 17 13 29 23 31 10 5 1 13 1 16 4 MEAN QNH PRESSURE IN HPA 1017.0 1019.6 1016.4 1021.8 1021.5 1018.2 1018.2 1018.0 1020.4 1024.5 1023.4 1019.7 1019.9 MAX. QNH PRESSURE IN HPA 1021.8 1026.7 1022.5 1026.8 1024.0 1022.0 1021.8 1022.1 1027.3 1029.1 1027.9 1025.0 1029.1 DAY 18 25 1 9 24 4 20 26 24 25 28 18 MIN. QNH PRESSURE IN HPA 1010.8 1011.7 1006.2 1017.3 1017.5 1014.2 1013.2 1012.0 1015.9 1020.1 1018.9 1014.0 1006.2 DAY 17 13 29 23 31 10 5 1 13 1 16 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 795.1 797.3 794.6 799.1 798.9 796.2 796.0 795.7 797.6 801.0 800.4 797.5 797.5 MAX. QFE PRESSURE IN HPA 799.6 803.0 799.6 802.5 801.0 800.1 798.5 799.0 802.3 804.5 804.0 802.5 804.5 DAY 18 25 7 9 24 3 20 26 24 25 28 18 MIN. QFE PRESSURE IN HPA 790.0 790.1 786.5 795.6 795.7 793.3 792.0 791.0 794.2 797.5 797.0 793.1 786.5 DAY 11 13 29 29 31 10 5 1 13 1 16 4 MEAN QNH PRESSURE IN HPA 1015.8 1018.5 1015.2 1020.7 1020.5 1017.2 1016.8 1016.5 1018.8 1023.0 1022.2 1018.8 1018.7 MAX. QNH PRESSURE IN HPA 1021.3 1025.4 1021.3 1024.8 1023.0 1021.9 1020.0 1020.6 1024.6 1027.3 1026.7 1024.8 1027.3 DAY 18 25 7 9 24 3 20 26 24 25 28 18 MIN. QNH PRESSURE IN HPA 1009.6 1009.7 1005.3 1016.4 1016.5 1013.6 1012.0 1010.8 1014.7 1018.7 1018.1 1013.4 1005.3 DAY 11 13 29 29 31 10 5 1 13 1 16 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 795.2 797.6 794.8 799.2 799.0 796.2 795.8 795.6 797.8 801.4 800.8 798.0 797.6 MAX. QFE PRESSURE IN HPA 800.0 803.0 799.4 802.0 801.0 799.8 799.0 798.8 802.3 805.0 805.0 803.2 805.0 DAY 18 25 7 9 18 3 8 26 24 26 28 18 MIN. QFE PRESSURE IN HPA 787.9 789.8 786.5 795.9 795.8 793.7 792.0 791.2 794.6 797.8 797.5 792.2 786.5 DAY 11 22 29 23 31 10 5 1 13 1 15 4 MEAN QNH PRESSURE IN HPA 1016.0 1018.8 1015.4 1020.8 1020.5 1017.1 1016.6 1016.4 1019.1 1023.5 1022.7 1019.4 1018.9 MAX. QNH PRESSURE IN HPA 1021.8 1025.4 1021.1 1024.2 1023.0 1021.5 1020.6 1020.3 1024.6 1027.9 1027.9 1025.7 1027.9 DAY 18 25 7 9 18 3 8 26 24 26 28 18 MIN. QNH PRESSURE IN HPA 1007.0 1009.3 1005.3 1016.8 1016.7 1014.1 1012.0 1011.1 1015.2 1019.1 1018.7 1012.3 1005.3 DAY 11 22 29 23 31 10 5 1 13 1 15 4 MEAN QFF PRESSURE IN HPA 1023.7 1025.8 1013.5 1013.3 1009.0 1000.6 996.9 997.3 1004.9 1013.5 1018.6 1021.1 1011.5 MAX. QFF PRESSURE IN HPA 1034.2 1035.9 1025.6 1022.5 1014.8 1006.3 1002.0 1001.5 1012.3 1020.3 1023.1 1032.0 1035.9 DAY 18 7 31 1 8 3 8 26 23 25 23 18 MIN. QFF PRESSURE IN HPA 1007.2 1010.1 1004.2 1006.8 1002.1 994.0 992.8 992.5 999.6 1009.2 1013.2 1010.2 992.5 DAY 11 22 15 24 31 30 5 1 7 1 16 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.1 0.5 6.4 11.9 19.6 25.1 27.4 28.3 24.2 15.9 10.7 4.7 14.4 MINIMUN AIR TEMPERATURE (C) -7.2 -5.0 -0.4 4.4 9.7 12.9 17.4 16.6 12.2 7.2 3.3 -1.8 5.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 3 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 25 17 5 0 0 0 0 0 0 0 0 8 55 DAYS WITH FREEZING MIN.<= 0 30 25 19 6 0 0 0 0 0 0 5 18 103 TEMPERATURE RECORDS LOWEST(C) -19.0 -11.4 -7.4 -1.6 2.4 9.2 13.4 12.4 9.6 3.4 -2.0 -13.0 -19.0 DAY 26 13 21 6 14 7 3 21 29 30 30 28 MAXIMUM AIR TEMPERATURE (C) 1.9 4.9 12.1 16.9 25.0 31.0 33.0 34.4 30.9 21.2 16.1 9.9 19.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 21 29 31 24 0 0 0 105 DAYS WITH MAXIMUM TEMP. <= 0 10 1 0 0 0 0 0 0 0 0 0 2 13 TEMPERATURE RECORDS HIGHEST(C) 6.1 9.4 17.6 23.6 29.8 35.0 35.4 37.0 33.0 25.4 20.0 17.0 37.0 DAY 13 28 10 27 21 30 28 13 15 5 3 4 DIF. BETWEEN (MAX.-MIN.) (C) 9.1 9.9 12.5 12.5 15.3 18.1 15.6 17.8 18.7 14.0 12.8 11.7 14.0 MEAN DAILY TEMP. (MDT) (C) -2.6 -0.1 5.8 10.6 17.4 22.0 25.2 25.5 21.6 14.2 9.7 4.0 12.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.5 37.2 129.8 139.9 26.2 0.0 0.0 0.0 333.6 HEATING DEG. DAYS(BASE 18 0C) 640.0 506.3 376.9 221.1 43.7 0.0 0.0 0.0 0.0 119.0 250.0 433.0 2590.0 DEWPOINT (MEAN C) -7.9 -6.7 -5.9 -4.2 0.4 0.0 6.3 2.8 -0.1 -2.7 -3.0 -6.3 -2.3 MIXING RATIO (G/KG) 2.78 3.08 3.32 3.76 5.12 5.02 7.68 6.04 5.06 4.17 3.91 3.10 4.42 VAPOUR PRESSURE (HPA) 3.53 3.91 4.24 4.78 6.51 6.37 9.70 7.65 6.44 5.33 5.02 3.96 5.62 SATURATION DEF. (HPA) 1.91 2.69 5.90 10.07 17.56 27.16 28.38 32.50 25.39 13.56 8.42 5.28 14.90 RELATIVE HUMIDITY (MEAN %) 67 62 48 38 31 21 28 21 22 32 41 50 38 RELATIVE HUMIDITY (MAX. %) 76 76 70 59 49 33 42 31 33 49 59 63 53 RELATIVE HUMIDITY (MIN. %) 56 48 32 25 22 14 21 15 15 22 28 35 28 RELATIVE HUMIDITY (MEAN% 03UTC) 72 70 66 56 47 33 41 30 33 46 58 63 51 RELATIVE HUMIDITY (MEAN% 09UTC) 63 57 40 30 26 16 23 17 18 26 34 44 33 RELATIVE HUMIDITY (MEAN% 15UTC) 68 59 43 35 27 16 24 18 18 30 40 48 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 37.3 41.1 33.6 33.7 4.8 0.0 0.4 0.0 0.0 31.3 17.0 12.3 211.5 DAYS WITH PRECIPITATION >=10 1 2 1 2 0 0 0 0 0 1 0 0 7 DAYS WITH PRECIPITATION >= 5 1 2 4 3 0 0 0 0 0 2 2 0 14 DAYS WITH PRECIPITATION >= 1 8 7 5 3 2 0 0 0 0 4 2 4 35 DAYS WITH PRECIPITATION 13 9 8 5 3 0 1 0 0 4 2 5 50 GREATEST DAILY PRECIPITATION 16.0 19.0 10.0 16.0 3.0 0.0 0.4 0.0 0.0 17.3 9.0 4.0 19.0 DAY 5 10 13 3 12 ** 12 ** ** 28 13 23 DAY WITH THUNDER STORM 0 0 0 1 0 0 0 0 0 1 1 0 3 DAYS WITH SNOW OR SLEET 8 6 2 0 0 0 0 0 0 0 0 2 18 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 135 135 135 270 270 135 135 135 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 7.8 7.3 7.1 8.3 9.8 9.3 8.6 9.9 10.0 9.0 10.5 9.2 8.8 PREVAILING WIND PERCENT 16.1 24.3 24.5 16.0 26.5 20.0 28.4 29.7 29.3 23.2 28.7 19.4 22.6 CALMS PERCENT OF WIND 55.5 45.0 29.7 36.7 19.4 31.3 30.3 25.8 24.0 29.7 42.0 52.9 35.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 144 147 155 213 222 186 118 140 147 180 143 158 158 VECTOR WIND MAGNITUDE(KNOTS) 2.6 3.3 3.8 2.6 2.6 3.0 4.2 3.5 2.3 2.6 3.7 1.7 2.6 WIND STEADINESES (MEAN %) 74.3 76.7 60.3 49.1 34.7 46.9 66.7 46.7 31.9 38.2 60.7 39.5 43.3 WIND SPEED (MEAN KNOTS) 3.5 4.3 6.3 5.3 7.5 6.4 6.3 7.5 7.2 6.8 6.1 4.3 6.0 FASTEST WIND DIRECTION 120 170 100 100 190 160 180 100 280 160 160 190 160 FASTEST WIND SPEED (KNOTS) 14 16 17 17 16 19 16 19 16 21 16 19 21 DAY 13 19 13 3 3 26 1 15 5 28 12 25 DAYS WITH SKY CLEAR (0-2)/8 10 15 13 13 25 30 14 26 30 21 20 14 231 DAYS WITH P.CLOUDY (3-6)/8 13 8 13 13 4 0 17 5 0 8 8 15 104 DAYS WITH CLOUDY (7-8)/8 8 5 5 4 2 0 0 0 0 2 2 2 30 DAYS WITH VISIBILITY =< 2 KM 5 3 1 2 0 0 0 0 0 0 0 1 12 DURATION OF SUNSHINE HOURS 172.0 195.8 249.2 267.5 361.7 388.5 309.7 332.1 330.8 274.0 248.8 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 796.8 794.4 798.4 796.8 798.1 796.6 795.1 796.1 799.0 802.4 802.7 799.8 798.0 MAX. QFE PRESSURE IN HPA 805.0 802.1 806.0 802.3 803.1 802.7 800.0 800.7 803.7 807.4 808.7 806.1 808.7 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 18- 6 5- 6 15- 6 4- 6 27- 6 16- 6 23- 6 6- 6 MIN. QFE PRESSURE IN HPA 791.0 785.0 793.7 790.2 791.1 792.2 789.2 792.0 794.9 796.1 796.5 789.0 785.0 DAY-HOUR 17-12 15-12 19- 3 16- 3 13- 3 27-12 5-12 1-12 4-12 14- 9 1-12 25-12 MEAN QNH PRESSURE IN HPA 1017.9 1015.0 1019.8 1017.9 1019.4 1017.7 1015.8 1017.0 1020.6 1024.6 1025.1 1021.5 1019.4 MAX. QNH PRESSURE IN HPA 1027.9 1024.3 1029.1 1024.6 1025.6 1025.1 1021.8 1022.6 1026.3 1030.8 1032.4 1029.2 1032.4 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 18- 6 5- 6 15- 6 4- 6 27- 6 16- 6 23- 6 6- 6 MIN. QNH PRESSURE IN HPA 1010.8 1003.5 1014.1 1009.8 1010.9 1012.3 1008.6 1012.0 1015.6 1017.0 1017.5 1008.4 1003.5 DAY-HOUR 17-12 15-12 19- 3 16- 3 13- 3 27-12 5-12 1-12 4-12 14- 9 1-12 25-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 796.6 794.4 798.6 797.0 798.3 797.3 795.9 796.9 799.7 802.6 802.8 800.0 798.3 MAX. QFE PRESSURE IN HPA 803.8 801.1 805.2 801.8 802.1 802.6 799.4 800.1 803.2 806.5 808.1 805.3 808.1 DAY 26 8 10 25 18 5 15 4 27 16 23 6 MIN. QFE PRESSURE IN HPA 791.0 786.8 793.7 790.2 791.1 793.0 791.2 794.4 795.8 796.6 798.3 789.5 786.8 DAY 18 10 19 16 13 27 5 1 4 14 1 25 MEAN QNH PRESSURE IN HPA 1017.6 1014.9 1020.1 1018.1 1019.7 1018.5 1016.7 1018.1 1021.5 1025.0 1025.2 1021.8 1019.8 MAX. QNH PRESSURE IN HPA 1026.4 1023.1 1028.1 1024.0 1024.3 1025.0 1021.1 1021.9 1025.7 1029.7 1031.7 1028.2 1031.7 DAY 26 8 10 25 18 5 15 4 27 16 23 6 MIN. QNH PRESSURE IN HPA 1010.8 1005.7 1014.1 1009.8 1010.9 1013.2 1011.1 1015.0 1016.7 1017.6 1019.7 1009.0 1005.7 DAY 18 10 19 16 13 27 5 1 4 14 1 25 MEAN QFF PRESSURE IN HPA 1022.4 1017.2 1017.7 1011.2 1006.8 1002.0 997.7 999.0 1005.8 1015.5 1019.9 1021.2 1011.4 MAX. QFF PRESSURE IN HPA 1041.3 1028.9 1028.7 1017.3 1013.7 1008.0 1003.4 1002.9 1012.0 1021.9 1027.4 1037.7 1041.3 DAY 26 8 21 8 15 5 15 24 27 16 23 28 MIN. QFF PRESSURE IN HPA 1012.2 1004.4 1009.4 999.6 996.5 993.9 993.2 993.5 999.7 1005.9 1012.2 1008.0 993.2 DAY 23 10 24 16 12 26 29 1 4 14 10 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 797.6 795.2 799.3 797.6 798.7 797.5 796.1 797.2 800.2 803.4 803.7 800.7 798.9 MAX. QFE PRESSURE IN HPA 805.0 802.1 806.0 802.3 803.1 802.7 800.0 800.7 803.7 807.4 808.7 806.1 808.7 DAY 26 8 10 25 18 5 15 4 27 16 23 6 MIN. QFE PRESSURE IN HPA 792.1 786.3 794.7 790.6 791.5 793.3 791.5 794.6 796.2 796.8 799.0 789.6 786.3 DAY 18 10 19 16 13 26 5 1 4 14 1 25 MEAN QNH PRESSURE IN HPA 1018.9 1015.9 1021.0 1018.8 1020.2 1018.7 1017.1 1018.4 1022.1 1025.9 1026.3 1022.7 1020.5 MAX. QNH PRESSURE IN HPA 1027.9 1024.3 1029.1 1024.6 1025.6 1025.1 1021.8 1022.6 1026.3 1030.8 1032.4 1029.2 1032.4 DAY 26 8 10 25 18 5 15 4 27 16 23 6 MIN. QNH PRESSURE IN HPA 1012.1 1005.1 1015.3 1010.3 1011.4 1013.6 1011.4 1015.2 1017.1 1017.9 1020.6 1009.1 1005.1 DAY 18 10 19 16 13 26 5 1 4 14 1 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 797.1 794.9 798.8 797.0 798.4 796.8 795.3 796.2 799.2 802.5 802.9 800.0 798.3 MAX. QFE PRESSURE IN HPA 804.6 801.7 805.1 801.6 802.8 801.9 799.7 800.0 802.8 805.8 807.6 805.2 807.6 DAY 26 8 10 26 18 5 15 4 27 16 23 5 MIN. QFE PRESSURE IN HPA 792.0 787.3 794.1 790.4 791.7 792.8 790.7 793.6 795.7 796.1 798.4 789.6 787.3 DAY 18 10 19 16 13 27 5 1 4 14 1 25 MEAN QNH PRESSURE IN HPA 1018.2 1015.6 1020.3 1018.2 1019.8 1017.9 1016.0 1017.2 1020.9 1024.8 1025.4 1021.8 1019.7 MAX. QNH PRESSURE IN HPA 1027.4 1023.9 1028.0 1023.7 1025.2 1024.1 1021.4 1021.8 1025.2 1028.9 1031.1 1028.1 1031.1 DAY 26 8 10 26 18 5 15 4 27 16 23 5 MIN. QNH PRESSURE IN HPA 1012.0 1006.3 1014.6 1010.1 1011.7 1013.0 1010.4 1014.0 1016.5 1017.0 1019.8 1009.1 1006.3 DAY 18 10 19 16 13 27 5 1 4 14 1 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 796.2 793.7 797.6 796.1 797.6 795.9 794.2 795.0 797.9 801.4 801.7 798.8 797.2 MAX. QFE PRESSURE IN HPA 803.4 800.0 803.6 800.0 801.7 801.4 799.0 799.3 801.3 804.6 806.1 804.3 806.1 DAY 26 8 9 26 18 4 15 4 27 15 22 5 MIN. QFE PRESSURE IN HPA 791.0 785.0 794.0 790.5 791.7 792.2 789.2 792.0 794.9 796.2 796.5 789.0 785.0 DAY 17 15 14 2 13 27 5 1 4 14 1 25 MEAN QNH PRESSURE IN HPA 1017.1 1014.1 1018.9 1017.0 1018.8 1016.7 1014.8 1015.7 1019.2 1023.5 1023.9 1020.4 1018.3 MAX. QNH PRESSURE IN HPA 1025.9 1021.8 1026.2 1021.8 1023.9 1023.5 1020.6 1020.9 1023.4 1027.4 1029.2 1027.0 1029.2 DAY 26 8 9 26 18 4 15 4 27 15 22 5 MIN. QNH PRESSURE IN HPA 1010.8 1003.5 1014.5 1010.2 1011.7 1012.3 1008.6 1012.0 1015.6 1017.1 1017.5 1008.4 1003.5 DAY 17 15 14 2 13 27 5 1 4 14 1 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 796.6 794.1 797.9 796.4 797.5 795.7 794.1 795.2 798.1 801.9 802.3 799.4 797.4 MAX. QFE PRESSURE IN HPA 803.6 800.0 804.4 800.0 801.7 801.6 798.2 799.3 801.8 805.8 806.8 804.9 806.8 DAY 26 7 9 24 18 4 15 4 27 15 14 5 MIN. QFE PRESSURE IN HPA 791.3 785.1 794.6 791.9 791.5 792.3 790.1 792.7 794.9 798.0 797.1 789.3 785.1 DAY 17 15 19 1 12 26 4 8 4 1 1 25 MEAN QNH PRESSURE IN HPA 1017.6 1014.6 1019.2 1017.4 1018.8 1016.6 1014.6 1016.0 1019.5 1024.1 1024.6 1021.0 1018.7 MAX. QNH PRESSURE IN HPA 1026.2 1021.8 1027.2 1021.8 1023.9 1023.7 1019.6 1020.9 1024.0 1028.9 1030.1 1027.8 1030.1 DAY 26 7 9 24 18 4 15 4 27 15 14 5 MIN. QNH PRESSURE IN HPA 1011.2 1003.6 1015.2 1011.9 1011.4 1012.4 1009.7 1012.9 1015.6 1019.3 1018.2 1008.7 1003.6 DAY 17 15 19 1 12 26 4 8 4 1 1 25 MEAN QFF PRESSURE IN HPA 1022.4 1016.5 1016.7 1010.4 1005.8 999.8 995.4 996.7 1003.7 1014.7 1019.2 1020.3 1010.1 MAX. QFF PRESSURE IN HPA 1039.9 1027.8 1024.8 1017.6 1011.9 1006.6 1001.2 1001.6 1010.2 1021.9 1027.5 1036.2 1039.9 DAY 26 7 21 8 15 4 15 3 27 15 14 28 MIN. QFF PRESSURE IN HPA 1011.0 1002.8 1009.9 1001.6 1001.5 992.6 989.9 992.4 998.5 1007.1 1011.4 1008.2 989.9 DAY 1 15 24 15 12 30 29 6 4 1 1 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION ALIGOODARZ (40783) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 24 N LONGITUDE 49 42 E DATA PROCESSING CENTER ELEVATION 2022.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.0 -0.1 6.5 13.8 17.4 24.1 28.8 28.3 23.2 14.2 9.1 1.0 13.9 MINIMUN AIR TEMPERATURE (C) -4.2 -5.8 0.9 5.3 7.7 13.0 17.7 17.0 12.7 6.7 2.1 -3.6 5.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 6 1 0 0 0 0 7 DAYS WITH MINIMUM TEMP. <=-4 17 17 1 0 0 0 0 0 0 0 0 16 51 DAYS WITH FREEZING MIN.<= 0 29 25 12 3 0 0 0 0 0 0 7 23 99 TEMPERATURE RECORDS LOWEST(C) -12.0 -15.0 -5.6 -1.6 1.6 6.4 13.6 13.8 6.2 3.4 -2.0 -12.6 -15.0 DAY 17 14 8 13 25 1 3 30 30 25 26 27 MAXIMUM AIR TEMPERATURE (C) 5.0 3.9 10.8 18.8 22.5 29.7 34.4 34.4 29.3 19.0 14.0 4.5 18.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 16 31 30 13 0 0 0 90 DAYS WITH MAXIMUM TEMP. <= 0 3 5 0 0 0 0 0 0 0 0 0 3 11 TEMPERATURE RECORDS HIGHEST(C) 9.8 10.0 17.2 24.0 26.4 33.4 37.2 36.8 35.0 24.4 19.4 10.2 37.2 DAY 7 25 22 28 16 30 21 9 10 7 1 10 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 9.7 9.9 13.5 14.8 16.7 16.7 17.4 16.6 12.3 11.9 8.1 13.1 MEAN DAILY TEMP. (MDT) (C) 0.4 -1.0 5.9 12.0 15.1 21.4 26.0 25.7 21.0 12.8 8.0 0.4 12.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 31.4 155.7 137.6 35.8 0.0 0.0 0.0 360.5 HEATING DEG. DAYS(BASE 18 0C) 544.6 530.9 376.2 179.2 94.3 1.8 0.0 0.0 9.6 159.9 298.6 544.5 2739.6 DEWPOINT (MEAN C) -5.4 -7.0 -1.8 -3.4 -4.7 0.2 0.7 -1.8 -4.4 0.8 -3.5 -6.8 -3.1 MIXING RATIO (G/KG) 3.35 3.09 4.37 3.95 3.62 5.14 5.26 4.48 3.57 5.26 3.77 3.16 4.08 VAPOUR PRESSURE (HPA) 4.27 3.93 5.55 5.04 4.61 6.53 6.66 5.69 4.57 6.72 4.83 4.02 5.20 SATURATION DEF. (HPA) 2.55 2.46 4.54 11.53 16.11 24.95 34.42 34.58 25.66 10.06 7.26 2.87 14.75 RELATIVE HUMIDITY (MEAN %) 65 63 59 35 25 23 18 16 18 45 44 59 39 RELATIVE HUMIDITY (MAX. %) 80 77 81 56 43 37 29 26 29 65 61 71 55 RELATIVE HUMIDITY (MIN. %) 51 50 41 21 15 15 12 11 11 31 31 47 28 RELATIVE HUMIDITY (MEAN% 03UTC) 74 70 76 53 42 37 27 26 28 62 59 67 52 RELATIVE HUMIDITY (MEAN% 09UTC) 60 60 53 28 19 18 14 12 14 38 38 53 34 RELATIVE HUMIDITY (MEAN% 15UTC) 66 65 53 28 20 18 14 13 15 41 42 60 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.0 48.8 91.4 19.0 0.6 2.9 0.0 0.0 2.0 23.4 21.2 106.5 338.8 DAYS WITH PRECIPITATION >=10 1 1 4 1 0 0 0 0 0 1 1 4 13 DAYS WITH PRECIPITATION >= 5 3 2 5 1 0 0 0 0 0 1 1 9 22 DAYS WITH PRECIPITATION >= 1 3 9 12 5 0 1 0 0 1 4 3 11 49 DAYS WITH PRECIPITATION 5 11 18 8 2 2 0 0 1 6 4 14 71 GREATEST DAILY PRECIPITATION 12.2 27.0 22.0 11.0 0.3 2.0 0.0 0.0 2.0 15.0 13.3 21.0 27.0 DAY 14 1 6 30 6